Power-pump.



N0. 773,250. PATENTEFOCT. 25,;1904f H. F. DUNHAM.

' POWER PUMP. I

APPLICATION FILED NOV. 11, 1903.

ASHEETS-BEBBT NO MODEL.

No. 773,250. PATENTED OCT. 25, 1904.

H. F. DUNHAM.

POWER PUMP.

APPLICATION FILED H0V'.11 1903.

N0 MODEL. 4SHEETS-SHEET 2.

PATENTED OCT. 25, 1904.

H. P. DUNHAM.

POWER PUMP.

APPLICATION FILED N0v.-11, 1903.

4 SHEETS-SHEET 3.

.Nb MODEL.

has 22271797 No. 773,250. PATENTED OCT. 25,1904.

H. F. DUNHAM.

POWER PUMP.

APPLICATION FILED NOV. 11, 1903. no MODEL. unsmwsxpm 4.

fvyehi Hiya/4777241772, .197 hi4 m? 6% FMW WMM WM W mu 3 4 O O x UNITED STATES Patented October 2 5, 1904.

PATENT OFFICE.

POWER-PUMP.

SPECIFICATION forming part of Letters Patent N0. 773,250, dated October 25, 1904.

A li ti fil d Novembe. 11,1903. Serial No. 180,673. (No model.)

I0 (LIZ whom it may concern.-

Be it known that I, HERBERT F. DUNHAM, a. citizen of the United States, residing in New York, borough of Manhattan, in the county of New York and State of New York, have invented certain new and useful Improvements in Power-Pumps, of which the following is a specifica idn.

T spresent invention relates to the conetruction and organization of a pump designed more particularly, even when made in small units, for pumping water with a high degree of efficiency and economy.

The present pump relates to that general type in which the power or so-called steam end of the pump is capable of separation from and of being variously located with reference to the water end, thus distinguishing the pump constituting the subjectmatter of the present invention from those in which the power and water ends are directly and rigidly connected with each other and enabling the distance between the two ends by reason of the possibility of change in their relative location to be adjusted to the varying exigencies and conditions involved in specific applications.

As ordinarily constructed for water-delivery the plungers are vertical, the power for directly actuating them being delivered from a crank-shaft which is supported by and becomes a part of the pump itself, thus making the whole a self-contained unit. As a result of such relative disposition and the aforesaid separability between the puinp and the source of power, the pump presents an advantageous organization, in that while the source of power may be located relatively high and at a point best facilitating the actua- One of the marked features characterizing the present pump is that of the ready accessibility of its parts. This feature, together with a sectional or built-up construction, enable the various parts to be individually removed without in general necessitating the taking down or entire dismantling of associated parts. Such a sectional or built-up pump construction gives a firm base for support, insures structural strength against hydraulic pressure, and permits the adjustment or alteration in asimple and economical manner of the distances separating various pump parts. For instance, the distance from the power-shaft t0 the intake-level can be increased so as to adapt the pump to a great when the difference between high-water limits and extreme low water is variable and approaches or exceeds theheight to which water will rise under atmospheric pressure and [ill intake-pipes.

While the present pump is a self-contained unit, it comprises a pair of separate independent pumps or subunitaeach complete in itself, although both subunit pumps have acommon' inlet and a common outlet, and both are driven from the same power-shaft. The branches of the supply and delivery passingto and from the respective subunits are each valve-controlled to permit, in case of needed repair or for other reason, either subunit to be cut out without interfering wit-h'the work or economy of operation of the other. This feature, while it is convenient in making repairs, gives a great range of capacity to conform to varying demands for water during different seasons of the year and to provide at small expense for an increase of double the pumping capacity duty.

' For. actuating the power-shaft I employ a power-driven belt passing over a driving-pulley secured to the power-shaft mounted upon the supports aforesaid.

In the drawings accompanying the present specification there is set forth a pump embodying my present invention.

In the drawings, Figure 1 is a side elevation thereof, the branched inlet and discharge pipes being omitted. Fig. 2 is an end elevawithout involving any change in efficiency or variety of difficult locations such as arise tion with one of these pipes in place. Fig. 3 is mainly a longitudinal section, taken on the plane of the line 3 3 in Fig. 2, part, however,

being shown in elevation, and the driven cranlcactuating pulley and power-shaft bearings being omitted. Fig. t is a plan view on the plane of the line 4 L, in Fig. 1. Fig. 5 is a detail sectional view, partly in elevation, of one of the shaft-supporting frames, looking from one end of the pump.

Similar characters of reference designate corresponding parts in all the figures of the drawings.

It has already been stated that the construction which the present pump exhibits is essentially asectional or built-up one. Of these sections one at each side contains both the inlet and outlet valves of the pump at that side, and as the pumps are double acting--that is to say, suction-producing at each stroke-each pinup-plunger has associated with it two such val ve-contai ning sections, one for the cylinderspace below the plunger (it being here reiterated that ordinarily the pump is vertically disposed) and one for the cylinder-space above the plunger. These valve-holding sections or chests are made in the nature of elongated beam-like parts, each subunit of the pump therefore comprising two of these sections. In their relation to each other the sections of each pair of valve-holding sections are separated somewhat from one another, being disposed one above the other sufficiently far apart to permit ready access to the removable cover-plates of the lower section immediately above the valves therein, the space above the corresponding cover-plates of the upper section being open and unobstructed. In a general way the present double subunit pump may be said to comprise two pairs of these upper and lower sections, with each of which pairs is associated a cylinder and plunger, the connectingrods of which latter run to cranks on a power-shaft supported by frames erected upon the pump parts beneath. Such frames are separated a distance suflicient to accommodate a driving-pulley secured to the driving-shaft, while the pump as a whole has a branched inlet and a branched outlet.

Referring to the drawings, the hollow upper valve-section of each subunit or single pump is designated by 2, the corresponding hollow lower section being designated by 3, and since the subunits at the opposite sides of the pump are substantially duplicates of each other the description hereinafter given of one is to be understood as applying to the other. The two sections 2 and 3 are in the form represented substantially like each other, each being elongated longitudinally and in the nature of a hollow beam-like part, forming an inclosed waterway 50 for the passage of the liquid from one end to the opposite end. The lower section 3 is closed at its bottom and the pump at that side rests upon the nether surface of the section while the upper face of the section is faced off for the major portion of its length and breadth to make water-tight joints with the parts superposed thereon.

Contiguous to the opposite ends of section 3 waterways 4: and 5, respectively, open outward through its upper face, while the section-casting is so formed as to provide substantially horizontal supports 51 52 for the necessary valves. The seat for the inletvalves 6 is designated by 7, and the seat for the outlet-valves 8 by 9, and in this instance the respective valve-seats are formed by separate plates removably secured in proper position to the casting-supports provided for them. The construction of these seats, the means for securing them to the supports, and the construction of the valves constitute no part of the presentinvention, since in respect to these features they may be o any material and construction found appro riate in practice. They will not, therefore, be "eferred to in detail. Access to the sets of inlet and outlet valves may be had by remow ing suitable cover-plates, such as 10 and 11, respectively, which are secured to the upper face of the section 3 by proper bolts 12. The upper section 2 is similarly provided with valves 6 8, valve-seats 7 9, valve-seat supports 51 52, and cover-plates 1O 11.

While bracing and strengthening ribs, webs, and flanges may obviously be used where deemed advisable, the present organization presents a practical, serviceable, and economical pump construction, in that no large water-spaces exist whose walls are liable to fracture under the hydraulic pressure of the working pump. This is true not only of the valve-containing sections already described, but likewise characterizes the other hollow waterway-forming sections hereinafter to be described. For this reason I prefer if the support for valve-seat of the outlet-valves is constituted by the upper faces of each valve-holding section, as shown, to locate the supports for the seat of the inlet-valves intermediate between the upper and lower walls of the section. The removable plate over such valves is then made to drop within the edges of the opening in the section in order to reduce the size of the water-space above the valves and the play of these latter being limited by the plate. In the form thereof illustrated recesses are provided for the entrance of the heads of the valve, thus preventing the latter from being accidentally dislodged from position.

The upper section 2 differs from the lower section 3, in that the vertical waterways 13 and 14:, at opposite ends of the former, open out through both the lower and upper faces of the section. The fact that the waterway 13 at the suction end of the section 2 opens downward through the lower surface of the section permits the liquid to pass to the inlet end of the lower section 3, while similarly thedischarge from the latter section may pass upwardly and mingle with the discharge from the section 2. The waterways 13 and 14 at the two ends of the-upper section are continued downward to aline with the openings of the waterways 4 and 5, respectively,through hollow spacing orseparating castings 15 15, whose faced ends lit between faced portions of the upper and lower sections and are secured in place by bolts 16. These spacing-pieces have a lengthwise dimension sufficient to separate the two sections vertically from each other a distance such that access may be had to the cover-plates and 11 for their ready removal and the examination of the valves within when desired. It is evident, moreover, that by using hollow connections of varying dimensions the vertical height of the sections from each other may be changed.

The piston or plunger for operating the pump, one at each side, works in the space intermediate that occupied by the inlet and outlet valves of the corresponding pair of sections. The cylinder of the plunger (the description of one being understood as applying to the other) is designated by 17 the same being provided with radial flanges 18 and 55, the distance between whose outer radial faces is determined by the axial length of the separators or spacing-pieces 15, that maybe used in any particular instancein other words, the distance the two sections 2 and 3 are spaced apart. Each plunger 19 (suitably packed) works in its cylinder, while the cylinder-spacebelow the plunger is open on each side to the longitudinal waterway 50 in the corresponding lower section 3, and the cylinder-space above the plunger is similarly open to the waterway in the upper section 2 of the connected pair. Preferably the wall of the cylinder is carried downward somewhat into the waterway in the lower section. Each section being attached to both the upper and lower sections of the connected pair acts as a tie to hold the sections rigidly together intermediate their ends, while for strengthening the upper and lower walls of each section 2 and 3 against internal hydraulic pressure each may be provided with suitable ribs 20, sufiiciently narrow, however, not tointerfere with the free passage of liquid.

T he power-shaft 21 from crank-disks 22 22, on opposite ends of which the plungers at the two sides are actuated, is supported upon suitable frames superposed upon the structure beneath. These frames 23 23 are in the form of A-frames, each bridging the space between the opposite ends of the upper section of the pump subunit beneath. They do not, however, rest directly upon the upper faces of the upper sections 2 2; but interposed between the lower spaces of the frames and the upper faces of the sections are hollow castings 24 24,

| ing on the casting.

each of which extends from one subunit-pump at one side to that at the opposite side and has its hollow space within divided by a crosspartition into a space at one end communicating in the cast-ing at the right in Fig. 3 with the suction-waterway 13 of one pump and a space at the opposite end communicating with the suction-waterway 13 of the other pump. Similarly the separated end spaces of the other casting communicate, respectively, with the discharge-waterways 14 14 of the two pumps. A branched pipe or Y 25, connecting with the end spaces in one of the hollow castings 24, constitutes the inlet or suction pipe for the pump unit, each branch of such pipe having an interposed valve 26 for shutting 0H and rendering inoperative that side of the main or unitary pump. Similarly a branched or Y pipe 27 at the opposite end constitutes a common discharge, each branch being, as before, provided with a controlling-valve 26. By altering the distance between the planes of the end faces of the castings 24 24 it is obviousthat with any given set of shaft-supporting frames the distance between the center of the power-shaft mounted thereon and the plane of a the upper face of section 2 may be varied.

The interior of the legs of the A-frames 23 23 is made hollow to constitute convenient airchambers for both the suction and discharge sides of each subunit-pump. Such is the construction illustrated in the drawings. The hollow space 28 within each casting 24 opens upward through the face of the casting to communicate with the hollow space 60 61 within the superposed leg of the frame rest- Of course the air-spaces in the two legs of each frame for the suction and discharge ends of the pump at that side will be shut off from each other by suitable partitions, while suitable strengthening-webs or cross-braces 29 may be provided within the hollow spaces of the frames for resisting pressure.

Each plunger-rod 30 passes upward through a suitable stufling-box 31 to a cross-head 32, working in guides 33, whose lower ends are secured to the upper section at that side and whose upper end is held by its fixed attachment to the adjacent A-frame. Each crosshead is connected by a suitable connectingrod 34 with a crank-pin 35, extending from the aforesaid crank-disk 22 on that side, these pins having, preferably, a quartering relation with respect to each other. The power-shaft is mounted in suitable bearings 36 on the upper ends of the A-frames, which latter are separated a sufficient distance apart to accommodate a combined fly and pulley wheel 37 for the reception of a driving-belt.

It will be noted that the driving-pulley is symmetrically related to the various parts, thus securing an even distribution of power in the running pump, while if the pulley is driven by an economical engine economical work is done by each subunit-pump on account of its simplicity, small number of parts, and therefore diminished :friction.

By reason of the fact that the illustrated pump comprises a pair of separate and independently-operative subunit-pumps it is obvious that either of the latter may be used. for pumping while the other remains inoperative as a pump. Under such circumstances the subunit-pump that is not working consti tutes a part support for the other or working subunit-pump. In lieu of the idle pump as a support manifestly other means may be employed for the purpose. It is equally plain that the actuating-shaft may be driven by means other than a pulley.

Having described my invention, I claim 1. A pumping-machine comprising a pair of elongated hollow sections; inlet and discharge valves mounted in each section; and hollow separators interposed between said sections and through which the interior spaces of the latter communicate with each other, in combination with a cylinder communicating with the interior space of each of said sections between the inlet and discharge valves therein; and a plunger in the cylinder to the space above which plunger the interior of one section is open and to the space below which plunger the interior space of the other section is open.

2. A pumping-machine com prising a pair of hollow elongated and substantially parallel sections separated one from the other; inlet and discharge valves mounted in each section respectively adjacent to the opposite ends thereof; removable cover-plates directly above said valves; and hollow separators interposed between said sections at the ends thereof and through which the interior spaces of the sections communicate with each other, in combination with an open-ended cylinder secured to said sections in the space between them with its axis transverse to the elongated axis of the sections; and a plunger working in the cylinder.

3. A pumping-machine comprising a pair of hollow elongated and substantially parallel sections separated one from the other; inlet and discharge valves mounted in each section respectively adjacent to the opposite ends thereof; removable cover-plates directly above said valves; and hollow separators interposed between said sections at the ends thereof and through which the interior spaces of the sections communicate with each other. in combination with an open-ended cylinder secured to the said sections in the space between them with its axis transverse to the elongated axis of the sections; a plunger working in the cylinder; a supporting-frame removably mounted on one of the sections; and a belt-driven crank mounted on said frame.

4:. In a pump, the combination of a pair of substantially parallel separated valve-holding sections formed with waterways; hollow separators interposed between the sections at the ends thereof; a double-acting plunger working in a line transverse to the general longitudinal axis of the waterways, in the sections; a supporting-frame formed with airchambers and mounted upon the adjacent sections of the pair thereof; removable waterway members interposed between the ends of said frames and the adjacent section; and a belt-d riven crank-shaft mounted on the frame.

5. A pum ping-machine comprising a pair of subunit-pumps arranged side by side; a branched inlet and a branched discharge pipe leading to and from said pair of subunitpumps; a valve in each branch pipe; a removable supporting-frame formed with airchambers and mounted on each pump of said pair thereof; a piston for each subunit-pump; and means mounted on said frame for actuating both pump-pistons.

6. A pumping-machine comprising a pair of subunit pumps arranged side by side; a branched inlet and a branched discharge pipe leading to and from said pair of pumps; and a valve in each branch pipe; combined with a removable supporting-frame mounted on each subunit-pump and each formed with air-chambers for both the inlet and discharge ends of the pump; a crank-shaft mounted on said frames for actuating both pumps of said pair; and a belt-driven driving-pulley secured to the crank-shaft and running in the space between the frames.

7. Inapumping-machine, a pair of built-up subunit-pumps arranged side by side and each comprising a pair of hollow elongated and substantiall y parallel sections separated one from the other, inlet and discharge valves mounted in each such section respectively adjacent to the opposite ends thereof, removable coverplates directly above said valves, hollow separators interposed between said sections at their. ends, an open-ended cylinder secured to the sections in the space between them with its axis transverse to the axis of the sections, and a plunger in the cylinder, in combination with a branched inlet and a branched discharge pipe the branches of which are each valve-controlled; removable supporting-frames mounted on each pump of said pair thereof; a crankshaft mounted on said frames for actuating both subunit-pumps; and a belt-driven pulley secured to the crank-shaft and running in the space between the frames.

8. In a pumping-machine, a pair of subunitpumps arranged side by side and each com prising a pair of hollow elongated and substantially parallel sections separated one from the other, inlet and discharge valves mounted in each such section respectively adjacent to the opposite ends thereof, removable cover-plates directly above said valves, hollow separators interposed between said sections at their ends, an open-ended cylinder secured to said sec- IIO tion in the space between them with its axis transverse to the axis of the sections, and a plunger in the cylinder, in combination with a branched inlet and a branched discharge pipe the branches of which are each valvecontrolled; removable supporting-frames each formed with air-chambers for both the inlet and discharge ends of each pump; removable waterway members interposed between the ends of said frames and the adjacent sections; a crank-shaft mounted on said frames for actuating the plungers of both subunit-pumps; and a belt-driven pulley secured to the crankshaft and running in the space between the frames.

9. In a pumping-machine, the combination of a pair of lower beams containing passageways, valve-chambers and inlet and outlet valves; a pair of upper beams containing passage-ways, valve-chambers. and inlet and outlet valves, said upper and lower beams being located in corresponding directions; framing members containing passage-ways, and located between the respective ends of an upper and a lower beam, said members each engaging between and connecting an upper and a lower beam and the passage-ways of the same, said members also serving to separate the upper and lower beams for providing space to accommodate the pump-cylinders; said pump-cylinders located between said upper and lower beams and communicating with the passage ways therein; double acting pump-pistons located in said cylinders; and means for operating the pistons.

10. In a pumping-machine, the combination of a pair of lower beams located on the respective sides of the machine and containing passage-ways, valve-chambers, and inlet and outlet valves; a pair of upper beams located on the respective sides of the machine and containingpassage-ways,valve-chambers, and inlet and outlet valves, the said upper and lower beams on each side being located in corresponding directions; framing members containing passage-ways, and located betwen the respective ends of the lower and upper beams on each side and engaging between and connecting the passage-ways of the same, said members being interchangeable and serving to separate the lower and upper beams for providing space to accommodate the pumpcylinders; said pump-cylinders located between said upper and lower beams and communicating with the passage-ways therein; double-acting pump-pistons located in said cylinders; means for operating the pistons; a pair of beams connecting the ends of one of said pair of beams, and containing passageways providing the inlet and discharge.

11. A pumping-machinecomprising a pair ofdouble-acting pumps, each embodying a cylinder and double-acting piston, body-pieces, end connections and crosspieces provided with water and valve spaces, said body-pieces, end connections and cross-pieces being so connected together and related to-each other as to form a substantial structure.

12. A pumping-machine embodying a pair of double-acting pumps, each of such pair embodying a cylinder, a piston therein, a pair of framing members, each provided with a chamber-space within it, each of which is connected with the outlet and with the inlet, and each of which is connected to one of the ends of said cylinder, valves in said chamber-spaces, framing members uniting said former framing members and having chamber-spaces to connect the chamber-spaces at the respective ends of said former chamber-spaces, a common'outlet and inlet, a framing member for uniting the pair of pumps and having chamber-spaces for connecting the chamber-spaces of said former framing members with said outlet and inlet.

13. In a pumping-machine, the combination of a pair of separated valve-holding sections formed with waterways, valves therein, hollow removable separators interposed between the sections at the ends thereof, a cylinder communicating at its respective ends with said waterways, a double-acting piston working in said cylinder, and means for operating the piston.

14. A pumping-machine comprising a pair of double-acting pumps arranged side by side, a branched inlet and a branched discharge pipe leading to and from said pair of pumps, and a hollow frame at each end of the pumps to unite the same and communicating with said discharge and inlet pipe and adapted to secure the pair together.

'Signed at Nos. 9 to 15 Murray street, New York, N. Y., this 10th day of November, 1903.

v HERBERT F. DUNHAM. WVitnesses:

FRED. J. DOLE, JOHN O. SEIFERT. 

